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MyCustomViewManager.java
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MyCustomViewManager.java
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package com.reanimatedeventbug;
import android.view.View;
import android.widget.TextView;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import com.facebook.react.bridge.Arguments;
import com.facebook.react.bridge.WritableMap;
import com.facebook.react.common.MapBuilder;
import com.facebook.react.uimanager.SimpleViewManager;
import com.facebook.react.uimanager.ThemedReactContext;
import com.facebook.react.uimanager.UIManagerModule;
import com.facebook.react.uimanager.annotations.ReactProp;
import com.facebook.react.uimanager.events.EventDispatcher;
import com.facebook.react.uimanager.events.RCTEventEmitter;
import java.util.Map;
import java.util.concurrent.TimeUnit;
import io.reactivex.rxjava3.core.Observable;
import io.reactivex.rxjava3.disposables.CompositeDisposable;
public class MyCustomViewManager extends SimpleViewManager {
private CompositeDisposable disposables = new CompositeDisposable();
private String EVENT_FROM_RCT = "onEventRCT";
public static String EVENT_FROM_DISPATCHER = "onEventDispatcher";
@NonNull
@Override
public String getName() {
return "MyCustomView";
}
@NonNull
@Override
protected View createViewInstance(@NonNull ThemedReactContext reactContext) {
TextView tv = new TextView((reactContext));
tv.setText("Hello World");
return tv;
}
@Nullable
@Override
public Map<String, Object> getExportedCustomDirectEventTypeConstants() {
MapBuilder.Builder builder = MapBuilder.builder();
builder.put(EVENT_FROM_RCT, MapBuilder.of("registrationName", EVENT_FROM_RCT));
builder.put(EVENT_FROM_DISPATCHER, MapBuilder.of("registrationName", EVENT_FROM_DISPATCHER));
return builder.build();
}
@ReactProp(name = "emitEvents")
public void setEmitEvents(TextView view, Boolean emitEvents) {
if (!emitEvents) {
disposables.clear();
} else {
disposables.add(Observable.interval(1, TimeUnit.SECONDS).subscribe(elapsed -> {
WritableMap args = Arguments.createMap();
args.putDouble("elapsed", elapsed.doubleValue());
// This isn't picked up by the useEvent hook from reanimated2
((ThemedReactContext) view.getContext())
.getJSModule(RCTEventEmitter.class).receiveEvent(view.getId(), EVENT_FROM_RCT, args);
// This is picked up
EventDispatcher eventDispatcher = ((ThemedReactContext)view.getContext())
.getNativeModule(UIManagerModule.class)
.getEventDispatcher();
MyCustomEvent event = MyCustomEvent.obtain(
view.getId(),
elapsed.doubleValue());
eventDispatcher.dispatchEvent(event);
}));
}
}
}